[tor-bugs] #28125 [Applications/Tor Browser]: Don't let Android leak DNS queries

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#28125: Don't let Android leak DNS queries
-------------------------------------------------+-------------------------
 Reporter:  sysrqb                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Immediate                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-mobile, tbb-proxy-bypass,        |  Actual Points:
  TorBrowserTeam201810R                          |
Parent ID:  #5709                                |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------

Comment (by igt0):

 For all my tests I have been using a real device connected to my computer
 and I am using mitmproxy(https://mitmproxy.org/) to debug http(s) protocol
 and wireshark for non tls stuff.

 **mobile/android/geckoview/src/thirdparty/java/com/google/android/exoplayer2/upstream/DefaultHttpDataSource.java**
 Steps:
 1. Open https://bitmovin-a.akamaihd.net/content/MI201109210084_1/m3u8s
 /f08e80da-bf1d-4e3d-8899-f0f6155f6efa.m3u8 or
 https://content.jwplatform.com/manifests/yp34SRmf.m3u8
 2. Look for connections to both URLs.

 Result: I was not able to verify any connection open for those URLs.


 **mobile/android/base/java/org/mozilla/gecko/updater/UpdateService.java**

 Test cases:

 1. Enabled MOZ_UPDATER
 2. Click in the check for updates button
 3. Verify if any connection was made to the update URL

 Result: No request was made

 **mobile/android/base/java/org/mozilla/gecko/CrashReporter.java**
 Not able to test.

 **mobile/android/geckoview/src/main/java/org/mozilla/gecko/media/GeckoMediaDrmBridgeV21.java**

 It is disabled in our prefs and we don't plan to enable soon. So I didn't
 test it.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/28125#comment:10>
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